chore(deps): bump github.com/charmbracelet/bubbles from 0.20.0 to 0.21.0 (#129)

Bumps [github.com/charmbracelet/bubbles](https://github.com/charmbracelet/bubbles) from 0.20.0 to 0.21.0.
- [Release notes](https://github.com/charmbracelet/bubbles/releases)
- [Changelog](https://github.com/charmbracelet/bubbles/blob/master/.goreleaser.yml)
- [Commits](https://github.com/charmbracelet/bubbles/compare/v0.20.0...v0.21.0)

---
updated-dependencies:
- dependency-name: github.com/charmbracelet/bubbles
  dependency-version: 0.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -1,9 +1,10 @@
 module github.com/charmbracelet/pop
 
 go 1.21
+toolchain go1.24.1
 
 require (
-	github.com/charmbracelet/bubbles v0.20.0
+	github.com/charmbracelet/bubbles v0.21.0
 	github.com/charmbracelet/bubbletea v1.3.4
 	github.com/charmbracelet/lipgloss v1.1.0
 	github.com/charmbracelet/x/exp/ordered v0.1.0